EPJ Web Conf.
Volume 126, 20164th International Conference on New Frontiers in Physics
|Number of page(s)||7|
|Published online||04 November 2016|
Femtoscopy with unlike-sign kaons at STAR in 200 GeV Au+Au collisions
Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in Prague, Břehová 7 115 19 Prague 1
a e-mail: firstname.lastname@example.org
Published online: 4 November 2016
In the collisions of heavy ions the nuclear matter can undergo a phase transition from hadrons to a state of deconfined quarks and gluons called the Quak-Gluon Plasma. Femtoscopic measurements of two-particle correlations at small relative momenta reveal information about the space-time characteristics of the system at the moment of particle emission. The correlations result from quantum statistics, final-state Coulomb interactions, and the strong final-state interactions between the emitted particles.
It has been predicted that correlations due to the strong final-state interactions in a system where a narrow resonance is present will be sensitive, in the region of the resonance, to the source size and momentum-space correlations. Such a measurement can provide complementary information to the measurements at very low relative momenta. This paper presents the preliminary results of a STAR analysis of unlike-sign kaon femtoscopic correlations in Au+Au collisions at √sNN = 200 GeV, including the region of ϕ(1020) resonance. The experimental results are compared to a theoretical prediction that includes the treatment of resonance formation due to the final-state interactions.
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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